Thanks for quick reply.
I am using mailchimp for our mailling list..A sample email link below.
http://us12.campaign-archive2.com/?u=b7a9ead664a05583502f7cd34&id=fc277566d4
I know in this email html, it's all tangled up tables, but I can change the html code to distinguish header and footer with <header> and <footer> or class with similar name.
Let me know if changing html would help.